Maybe you can set up a 'point' system where he starts off the day with 10 points, and if he has 10 points at the end of the day, then he gets kissed by you. However, he can lose points if he plays his game while you're trying to talk to him. You have to give him a point, however, if you interrupt him while he is in the middle of a game or whatever it is and get upset if he doesn't drop everything to talk to you.